The word 推波助澜 is formed by sequentially combining the characters 推 (push), 波 (waves), 助 (assist), and 澜 (billows), where each character contributes directly to a literal meaning of "pushing waves and helping billows". This literal action metaphorically conveys the concept of amplifying or aggravating an existing situation, such as escalating tensions or worsening a trend, through the combined effect of the characters' meanings.